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Communications Cards

Dell™ Latitude™ D631 Service Manual

  Wireless Local Area Network (WLAN) Card

  Mobile Broadband Network (WWAN) Card

  Subscriber Identity Module (SIM) Card

Wireless Local Area Network (WLAN) Card

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.

CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface, such as a connector on the back of the computer.

If you ordered a WLAN card with your computer, the card is already installed.

1. Follow the procedures in Before You Begin.
   
   
2. Remove the hinge cover (see Hinge Cover).
   
   
3. Remove the keyboard (see Removing the Keyboard).
   
   

1

WLAN card

2

antenna cables (2)

NOTICE: To prevent damage to the connector, do not use tools to release the securing tabs.

4. If a WLAN card is not already installed, go to step 5. If you are replacing a WLAN card, remove the existing card:
   
   
   1. Disconnect the antenna cables from the card.
      
      

NOTE: The WLAN card may have two or three antenna connectors, depending on the type of card you have.

2. Release the card by pushing the metal securing tabs away from the card until the card pops up slightly.
   
   
3. Slide the card at a 45-degree angle out of its connector.
   
   

NOTICE: The card connector is keyed to ensure correct insertion. If you feel resistance, check the connector and realign the card.

NOTICE: Do not insert a Mobile Broadband network (WWAN) card into the WLAN card connector.

1

WLAN card

2

metal securing tabs (2)

NOTICE: To avoid damaging the WLAN card, never place cables on top of or under the card.

5. To install a WLAN card:
   
   
   1. Move any antenna cables out of the way to make space for the WLAN card.
      
      
   2. Insert the WLAN card into the system board connector at a 45-degree angle, and press the card into the metal securing tabs until you feel a click.
      
      

1

WLAN card

2

system board connector

3

antenna cable connectors

NOTE: For more specific information about which cable to connect to which connector, see the documentation that came with your WLAN card.

3. Connect the antenna cables to the WLAN card, ensuring that you route the cables correctly (see the cable routing diagram in Removing the Display Assembly).
   
   

Mobile Broadband Network (WWAN) Card

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.

CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface, such as a connector on the back of the computer.

NOTE: Mobile Broadband network cards may not be available in certain regions.

If you ordered a Mobile Broadband network card with your computer, the card is already installed.

1. Follow the procedures in Before You Begin.
   
   
2. Remove the hinge cover (see Hinge Cover).
   
   
3. Remove the keyboard (see Removing the Keyboard).
   
   

1

Mobile Broadband network card

2

antenna cables (2)

NOTICE: To prevent damage to the connector, do not use tools to release the securing tabs.

4. If a Mobile Broadband network card is not already installed, go to step 5. If you are replacing a Mobile Broadband network card, remove the existing card:
   
   
   1. Disconnect the antenna cables from the Mobile Broadband network card.
      
      

NOTE: The Mobile Broadband network card may have two or three antenna connectors, depending on the type of card you have.

1

Mobile Broadband network card

2

metal securing tabs (2)

2. Release the card by pushing the metal securing tabs away from the card until the card pops up slightly.
   
   
3. Slide the card at a 45-degree angle out of its connector.
   
   

NOTICE: The connectors are keyed to ensure correct insertion. If you feel resistance, check the connectors and realign the card.

NOTE: Do not insert a WLAN card into the Mobile Broadband network card connector.

5. To install a Mobile Broadband network card:
   
   
   1. Move any antenna cables out of the way to make space for the Mobile Broadband network card.
      
      

NOTICE: To avoid damaging the Mobile Broadband network card, never place cables on top of or under the card and ensure that you route the cables properly.

2. Insert the card into the system board connector at a 45-degree angle, and press the card into the metal securing tabs until you feel a click.
   
   

1

Mobile Broadband network card

2

antenna cables (2)

NOTE: For more specific information about which cable to connect to which connector, see the documentation that came with your Mobile Broadband network card.

3. Connect the antenna cables to the Mobile Broadband network card, ensuring that you route the cables correctly (see the cable routing diagram in Removing the Display Assembly).
   
   

Subscriber Identity Module (SIM) Card

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.

CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface, such as a connector on the back of the computer.

1. Follow the procedures in Before You Begin.
   
   

1

SIM card

2

metal brackets (2)

NOTICE: Do not touch the SIM card connectors to protect the card from electrostatic discharge (ESD). To prevent ESD, hold the card in your hand before you insert or remove the card.

2. Turn the computer over.
   
   
3. With the cut-off corner on the card facing away from the card compartment, insert the SIM card into the compartment (as shown) so that it slides under the metal bracket on the sides.
   
   

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